Device having wireless rotational speed detector and display

ABSTRACT

A device having wireless rotational speed detector and display includes a pedal assembly and a display assembly. This pedal assembly has a treadle surface and a receiving portion. When a rotation occurs between the shaft and the receiving portion, it will generate a wireless signal to the display assembly and then show out related data such as rotational speed. So, it can avoid the short circuit problem. The user can install this invention by oneself. And, it can be used on other application device.

BACKGROUND OF INVENTION

1. Field of the Invention

The present invention relates to a device having wireless rotationalspeed detector and display. It can avoid the short circuit problem. Theuser can install this invention by oneself. And, it can be used on otherapplication device.

2. Description of the Prior Art

Referring to FIGS. 1 and 2, they show the traditional rotational speeddetector and display installed on a stationary exercising bike. Atraditional rotational speed detector 81 and a traditional display 82are mounted on the stationary exercising bike 90. This traditionalstationary exercising device 90 also has a pipe 91 and a flywheel 92(see FIG. 2) inside.

The traditional rotational speed detector 81 includes a magnetic block811, which is mounted on the flywheel 92, a magnetic sensor 812, severalwires 813, and several wire connectors 814.

About the traditional installation method, the pipe 91 should bedetached first and then several wires 813 can be inserted in. Then, bymeans of these wire connectors 814, the wires 813 and the traditionaldisplay 813 are connected. Finally, all these separated parts aresecured together.

However, the internal space in the traditional stationary exercisingbike 90 is narrow and contains many other elements (not shown). Thesewire connectors 813 usually be contacted, squeezed, or locked by othersunintentionally and then a short circuit problem occurs.

Besides, there are several wire connectors 814. Theses connectors mightloose and become disconnected. Thus, a false signal will occur.

Because all these wires and connectors need to be installed by aprofessional worker, it is hard to be designed as a D-I-Y(Do-It-Yourself) product that is assembled or installed by a generalconsumer.

SUMMARY OF THE INVENTION

The primary object of the present invention is to provide a devicehaving wireless rotational speed detector and display. It can avoid theshort circuit problem.

The next object of the present invention is to provide a device havingwireless rotational speed detector and display. In which, the user caninstall this invention by oneself.

Another object of the present invention is to provide a device havingwireless rotational speed detector and display. It can be used on otherapplication device.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of the traditional stationary exercisingbike.

FIG. 2 shows the traditional device having rotational speed detector anddisplay with wires.

FIG. 3 is a perspective view showing this invention is installed on anapplication device.

FIG. 4 is a view showing the simplified structure of this invention.

FIG. 5A is a perspective view of the pedal assembly of the presentinvention.

FIG. 5B is a perspective view of the auxiliary pedal assembly of thepresent invention.

FIG. 6 is a top view showing the pedal assembly of this invention.

FIG. 7 is a view showing the internal structure of the pedal assembly ofthe present invention.

FIG. 8 is perspective view showing the disassembled pedal assembly.

FIG. 9 illustrates the movement of the pedal assembly.

FIG. 10A shows the pedal assembly is at the first position.

FIG. 10B shows the pedal assembly is at the third position.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIGS. 3, 4, 5A and 6, the present invention is a devicehaving wireless rotational speed detector and display. It mainlycomprises a pedal assembly 10 and a display assembly 20.

With regard to this pedal assembly 10, as shown in FIGS. 7 and 8, it hasa treadle surface 11 and a receiving portion 12. The receiving portion11 includes a shaft 13, a rotation detector 14 (such as a magneticdetector or an optical detector), a first signal processing portion 15,a wireless signal transmitter 16 and a power source 17 (such as abattery). This shaft 13 connects with a rotational application device 30(for example, a stationary exercising bike). The shaft 13 is disposedwith a signal portion 131 (for generating a magnetic signal or anoptical signal).

Practically, when the signal portion 131 moves toward said rotationdetector 14 and arrives to a closest position, there still is a gaptherebetween (approximately 0.1 mm to 2 mm).

About the display assembly 20, it has a wireless signal receiver 21, asecond signal processing portion 22 and a display 23.

Thus, when a rotation occurs between the shaft 13 and the receivingportion 12, the signal portion 131 passes by the rotation detector 14and generates a passing signal; the passing signal is received by thefirst signal processing portion 15 and then this wireless signaltransmitter 16 sends out a wireless signal (such as a radio wave orinfrared wave, with a predetermined frequency) to the wireless signalreceiver 21 of the display assembly 20; after the second signalprocessing portion 22 processing the wireless signal, this display 23shows data. The data can include one or more items of rotational speed,revolutions, velocity, distance, calorie consumed, and total steps.

FIGS. 9, 10A and 10B illustrate the operation of this invention. When auser exercises on this application device 30. One's right foot contactsthe pedal assembly 10. At the beginning, this pedal assembly 10 is atthe highest position, namely a first position P1. When the right footpresses down, it will move to a medium position, namely a secondposition P2 and then reaches the lowest position, namely a thirdposition P3.

When it is at the first position P1, the signal portion 131 moves to thelowest position that is the closest position (with a gap) to therotation detector 14, as shown in FIG. 10A.

When it is at the third position P3, the signal portion 131 moves to thehighest position that is the farthest position to the rotation detector14, as shown in FIG. 10B.

Meanwhile, once the user steps for a cycle, the signal portion 131 willrotate a cycle accordingly. That is, once the signal portion 131 passesby the rotation detector 14, a passing signal will be generated.Therefore, if the user steps 30 cycles per minute, 30 passing signalswill generate. By using the wireless transmission technology, thepassing signals will be received by the wireless signal receiver 21 andthen can be processed by the second signal processing portion 22.Finally, the display 23 will show out data. The data at least includethe information of rotational speed, such as 30 rpm.

In addition, in this embodiment, it can further comprise:

an auxiliary pedal assembly 40 containing a counterweight 41 (asillustrated in FIG. 5B). The weight of the auxiliary pedal assembly 40should be approximately equal to the weight of the pedal assembly 10, sothat both pedal assemblies (one on the right; the other on the left) arebalanced.

The application device 30 can be a stationary exercising bike or otherkind of exercising apparatus having the rotational stepping exercise.

When the user finishes the exercise, in case the signal portion 131 juststays near the rotation detector 14, an automatic cut-off functionshould be added into the first signal processing portion 15. When itcontinues to send out the passing signals for a preset period, it willbe shut down automatically for avoid the waste of the electricity of thepower source 17.

Thus, the advantages and functions of this invention can be summarizedas follows:

[1] It can avoid the short circuit problem. Because this invention iswireless and there is no wire connector, the short circuit problem inthe traditional device can be avoided.

[2] The user can install this invention by oneself. The installation ofthis invention is very easy, it does not need to detach the mainstructure of the exercising bike (such as the pipe and body). Thus, itcan be designed as a D-I-Y product.

[3] It can be used on other application device. In other kind ofapplication device 30, this invention still can be applied. Thetraditional pedal assembly can be replaced by the pedal assembly 10 ofthis invention. In addition, the display assembly 20 is installed. So,it can be applied on other device. Its application scope is wide.

The above embodiments are only used to illustrate the present invention,not intended to limit the scope thereof. Many modifications of the aboveembodiments can be made without departing from the spirit of the presentinvention.

1. A device having wireless rotational speed detector and displaycomprising: a pedal assembly having a treadle surface and a receivingportion, said receiving portion including a shaft, a rotation detector,a first signal processing portion, a wireless signal transmitter and apower source; said shaft connecting with a application device that canbe rotated, said shaft being disposed with a signal portion; and adisplay assembly having a wireless signal receiver, a second signalprocessing portion and a display; so that when a rotation occurs betweensaid shaft and said receiving portion, said signal portion passing bysaid rotation detector and generates a passing signal; said passingsignal is received by said first signal processing portion and then saidwireless signal transmitter sends out a wireless signal to said wirelesssignal receiver of said display assembly; after said second signalprocessing portion processing said wireless signal, said display showsdata.
 2. The device having wireless rotational speed detector anddisplay as claimed in claim 1, wherein: said data include at least oneitem of rotational speed, revolutions, velocity, distance, calorieconsumed, total steps; said wireless signal from said wireless signaltransmitter is a radio wave with a predetermined frequency.
 3. Thedevice having wireless rotational speed detector and display as claimedin claim 1, wherein when the signal portion moves toward said rotationdetector and arrives to a closest position, there is a gap between 0.1mm to 2 mm therebetween.
 4. The device having wireless rotational speeddetector and display as claimed in claim 1, wherein said signal portiongenerates a magnetic signal or an optical signal; and said rotationdetector is selected from a magnetic detector or an optical detector. 5.The device having wireless rotational speed detector and display asclaimed in claim 1, the first signal processing portion further includesan automatic cut-off function.
 6. The device having wireless rotationalspeed detector and display as claimed in claim 1, further comprising: anauxiliary pedal assembly containing a counterweight, a weight of theauxiliary pedal assembly being approximately equal to a weight of thepedal assembly; and said application device being a stationaryexercising bike.